Locking safety-pin.



,Nm 873,927. 'PATBNTED DEG. 1v, 19o?.

K. G. DIBTBRIGH. Lou-ING SAFETY PIN.

AHLIOATION ILED DBO. 27. 1906.

' vw ATTORNEY UNITED STATES KARL G. DIETERIGH, OF NEW YORK, N. Y.

LOCKING SAFETY-PIN.

Specification of Letters Patent.

:Patented nec. 17, 1907.

Application filed December 27. 1906. Serial No. 349.619.

yKings county; in the State oie New York,

have invented certain new and useful linproveinents in LockingSafety-Pins, of which the following is a full, clear, and exact speci-f'iication. n

l My invention relates generally to fastening devices and the saine hasfor its object more particularly to provide a simple, efiicient andreliable safety pin which is' so constructed that it will be strongerand capable of withstanding greater strain than such pins are commonly ale to withstand.

Further said invention has for its obje'ct to f provide a safety pii'iwherein its pointed end i may be securely locked within the cap orguard.

Further said invention has tor its object to provide a safety in whereinthe pin incinber proper when loc/(ed with its cap or guard will. serveto strengthen the entire structure,

and prevent. the pin ineinber beconiiiig bent under strain and its endwithdrawn lrom its cap or guard. I

To the attainment. ot the aforesaid objects and ends i'ny inventionconsists in the novel details of construction, and in the coinbina tion,connection and arrangeineiit ot' parts liereiiiatter more iullydescribed, and then l pointed out in the claims.

in the accompanying drawings forming nierals ol reference indicate likeparts. Figure 1 is a side View ol' a safety pin constructed according toand embodying my said inventaken on the line Lt-Ltfof Fig. Fig. 5 is a 3detail perspective view of the cap or guard. l Fig. (l isa detail viewdetached from the pin; illustrating a inodi ied torni ol pin, and Fig. 7

is a similar View illustrating a llurther inodi- 5 lied torni of pin,designed to be used in safety Q pins ofs'inall size in ade of wire ofsmall gage.

whole formed essentially ol' n single piece ol. wire, and comprising asubstantially straight bodyortion 11, a pin 12', and a spring 13 provied at the junction olk said body-portion 11 and pin 12. The body-portion11 nearits inclosed end is bent inward and outward again to forni aguide 14 which is tapered towards its end and serves to guide the pointend ot the pin 12 into the cap or guard. The end 15 ol" the body-portion11 is bent at l right angles to tlielongitudinal axis of the pin, andits extreme end 16 is again bent inward and parallel with said axis.

17 denotes the cap or ,guard which is `torined ol a single piece ofsheet metal and comprises a tubular portion .18 which' is clamped to theend of the body-portion 11 and surrounds the portions 15 and 16thereof.4 The inner end of said cap terminates in two upwardly extendingseparated parallel side plates or nienibers 19, 19 vadapted to receiveintermediate the saine the point end of the pin 12. The extreme rearends ol plates or nienibers 19, 19,. are bent toward each other to fornillugs 2G`ji20. The i upper edges ot said lugs 20, 20 alte rounded at 21.21, and the vertical op osiiigv edges l' thereof are slightly taperedaiirFnieet at the lower edge of the cap or guard where the i saine lorina substantially senil-circular rel cess 22 adapted to receive the pointend of thc pin l 2: The lugs 20, 20 of theside plates or ineinbeis arebent forward as best shown at Figs. 2 and .-l. I

The pin 12 is provided upon its opposite sides adjacent to its point endwith parallel vertical recesses or notches 23, 23 Vwhich areso'positioned that the saine will be engaged Y by the inwardlyprojecting lugs 20, 2O of the part ot this specification wherein like.nuf cap or guard 17 when the end of the in is in position therein. andserve to hold t ie point end of said'pin l2 securely attached thereto.

ln the modification illustrated at Fig. 6, the engaging recesses ot' thepin 25 are annular. With either torni of recess as shown in this figure,and also in Figs. 1, 2 andv 3, there may be a plurality ol" recessesarranged side by side in order to insure the end of the pin ,beingsecurely engagei'l by the ends of the lugs where the pin itseltl becomesbowed un der a strain, and consequently so shortened l that. it couldnot be properly engaged were it only provided with a single notch orrecess'.

At Fig. 7 l have illustrated a further form ol pin, and in thisconstruction the pin 28 is vln said drawings 10 designates the pin as aprovided adjacent to its point end with an enlarged portion ,29 whichtapers in both directions, and provided at its thickest part with an`annular rec-ess 30. It will of course be obvious that any number ofsuch recesses l whether vertical or annular may be provided.

The construction here illustrated is more particularly designed forsmall pins which are usually made ofsmall stock and for that rea' soncould not be recessed without weakening the same.

The uses and operations of the devices are obviousl` It is to be noted,however, that in my improved form of safety pin the point end is notonly secured against .lateral movement, but also against longitudinalmovement, due usually to the bendingor bowing of the pin 12 under strainor tension, and that inV my said constructions this strain or tension istaken advantage of, for the greater the strain or tension on the pin l2becomes, the tighter will the lugs 20, 20 of the cap due to theirtoggle-like action en age the recesses or groove in the in, am in thisway the resiliency of the bodv- ,lortion l] is utilized to maintain thelocliing engagement with the pin l2; while the strain or tension isresisted not only by the pinproper, 12, but

, by the entire structure.

Having thus described my invention, what i claim and desire to secure byLetters Patent is:

l. A safety pin comprising a body portion, a pin extending therefrom, acap secured to said body ortion provided with inwardly and forwardlyprojecting lugs adapted to engage said pin and wedge the end thereofintermediate said lugs under tension of said pin, substantially asspecied.

2. A safety pin comprising a body portion, a cap secured theretoprovided with inwardly and forwardly projecting lugs, and a pinextending from said body portion adapted to be engaged by the lugs onsaid cap, substan tially as specified.

A safety pin comprising a body portion, j a cap secured thereto providedwith inwardly l and forwardly projecting lugs having their inner edgesarranged substantially parallel to i wardly projecting lugs on said sideplates,

and a pin projecting from said body portion provided with recessesadapted 'to be engaged by the ends of the lugs on said side plates,substantially as specilied. y

6. A safety pin comprising a body portion, a'cap secured thereto at oneend provided at its rear end with inwardly 'and forwardly projectinglugs having their vertical edges free and arranged substantiallyparallel to each other, and a pm projecting from said body portionprovided with recesses adapted to be engaged by the vertical edges ofthe lugs'on said cap, substantially as specified.

7. A safety pin comprising a body-portion, a cap secured theretoprovided at its rear end with inwardly and forwardlyv rejecting lugs, apin at the other end of said) body-portion, and a plurality of annularrecesses arranged side by side in said pin adjacent to its free endadapted to be engaged by the lugs on said cap, substantially asspecified.

Signed at the city of New York, in the county and State of New York,this twentyfourth drayof December, nineteen hundred and j v KARL G.DIETERICH.

Witnesses CONRAD A. Dm'ricnion, Louis B. HASBROUCK'.

